Senior Integration Engineer (JavaScript/Python)

About the client

Our client is a venture-backed AI-powered platform built specifically for consumer brands. It connects to sources like banks, POS systems, and advertising platforms to deliver daily profit & loss snapshots, cash flow plans, and peer benchmarking - all in real time. With integrations across finance, e‑commerce, and marketing tools, Iris provides the clarity and automation brands need to grow confidently 
 

What You’ll Do

• Design, implement, and maintain core backend services using JavaScript and Python.
• Build and manage reliable API endpoints, ensuring smooth data flow between internal systems.
• Write clean, well-tested code to process and transform financial data.
• Monitor service health, troubleshoot issues, and ensure system reliability and performance.
• Partner with product, data, and frontend teams to define integration requirements and API contracts.
• Create tools and dashboards to track system usage, performance, and data integrity.
• Review and improve code quality, and contribute to best practices in testing, documentation, and deployment.
   

What We’re Looking For

• 5+ years of professional experience in software engineering, focused on back-end, integration, or data engineering roles.
• Proficiency in JavaScript (Node.js) and Python, with experience building RESTful APIs.
  Hands-on integration experience with external APIs (OAuth, pagination, webhook handling, rate limiting, retries, etc.).
• Strong data modeling skills — familiarity with JSON, SQL/NoSQL, schemas, data validation, and transformations.
• Experience with cloud infrastructure (AWS, GCP, or similar) and containerization (Docker, Kubernetes).
• Excellent debugging and monitoring practices: logging, metrics, tracing, and automated alerting.
• Strong communication & collaboration skills; ability to work with cross-functional teams.
• Bonus: Familiarity with financial systems (accounting platforms, bank APIs, POS systems) and ML-enhanced data pipelines.
   

What We Offer

• Competitive salary aligned with market standards, with annual salary reviews.
• A friendly, collaborative startup environment where you can drive impact in a mission-critical space for growing consumer brands.
• High-growth opportunity - join early and help shape a cutting-edge product used by high-velocity, finance-driven companies.
• Access to modern tech stack, including serverless/cloud-native solutions, event-driven pipelines, and experimentation with LLMs/AI for data validation.
• Generous time off, flexible work arrangements, and commitment to work-life balance.